Feeler for looms



Patented Aug. 5, 1924.

UNETED STATES PATENT FFW.

EDWARD S. STIMPSON. OF EHOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COR-?ORATION, OF HOPEDALE, MASSACHUSETTS, A. CORPORATION 0F MAINE.

Application filed March 25, 1921. Serial No. 455,533.

To all 'whom t may, concern:

Be it known that I, EDWARD S. STIMPsoN, of Hopedale, in the county ofWorcester and `State of Massachusetts, have invented a new Feeler forLooms, of which the fol# lowing is a specification. f

The invention is ,an improvement upon the feeler mechanism set forth inUnited States Letters Patent No. 1,309,226, July 8, 1919, and consistsin the feeler construction.

In accordance with the present invention., the feeler is constructed soas to contact with the weft more closely into the angle between the headand shank of the bobbin than in the case of the feeler illustrated inVthe aforesaid patent. This is especially important in the case ofbobbins for special weaves, such as mohair, upon which the initialwindings of weft are wound close to the angle between the head and shankof the bobbin.

The improvement is illustrated in the accompanying drawings, wherein-Figure 1 is a plan View of the feeler mechanism showing the feeler tipin con` tact with the weft on a full'bobbin. Fig. 2 is a -plan viewshowing the action of the feeler tip when the weft is at the criticalstage of exhaustion. Fig. 3 is a cross-section in the plane indicated bythe line 3-3 in Fig. 1.

The drawings illustrate a bobbin sucn as is employed with'mohair weaves,wherein the corrugated shank A is formed with alternating depressionsand projections, the initial windings B of weft being wound in thedepression which is close to the angle between the shank and head C ofthe bob bin. It is apparent from a comparison between the organizationshown infthe aforesaid Stimpson patent and that illustrated in theaccompanying drawings, that with the organization of said patent thefeeler would perform its side-slipping movement long before the weft inits unwinding reached the condition shown in Fig. 2 of the accompanyingdrawings.

In accordance with the present invention, the laterally slipping guidedfeeler shank D is outwardly bent toward the head of the bobbin, as shownat E, at its rear, and is thence inwardly bent to form the extendingtoothed tip F, at the extreme rear of the feeler. This tip extendslaterally from the rear bend of the feeler shank and inwardly toward themouth of the shuttle box. By reason of this construction the teeth onthe feeling surface of the tip are brought closer to the head of thebobbin than would otherwise be the case. As shown in the drawings,`therelation between the feeler yarm and the tip is such that a rearwardprolongation of the inner face G, or the feeler" shank intersects thetoothed portion of the tip F. With this construction, the feeler teethcontinue to contact with the weft until it is so far exhausted that thctoothed end of the feeler comes in Contact with the first projection con the bobbin shank beyond the depression near the bobbin head in whichthe initial bunch B of weft is wound. Fig. 2 shows in dotted lines theposition of the feeler tip when its toothed face effectively encountersthis initial bobbin shank projection. As the tendency of the feeler toslip sidewise is no longer resisted by the weft, the feeler tip slipslaterally on the smooth surface of the bobbin shank to the positionindicated by the full lines in Fig. 2, thereby setting into motion thetrain of weft replenishing mechanism as set forth in the aforesaidpatent.

Fig. 1 of the present drawings shows the parts of the feeler mechanismwhich inimediately cooperate with the feeler arm. These cooperatingparts are the same as those of the aforesaid patent. It now suffices tosay that the feeler shank is moved forwardly by the impact of thebobbin, and it is moved rearwardly by a spring H. The feeler shank isguided by the front swivel guide I, and the rear slotted guide J. Whenthe feeler arm slips laterally indicated in Fig. 2, a controller K, ismoved laterally, thereby initiating the actiony of the weft replenishingmechanism whereby replenishment of weft occurs before the running weftis completely exhausted. The feeler teeth are shown as similar to thoseset forth in Letters Patent of the United States, No. 1,380,940, June 7,1921.

It will be noted from the drawing that the shank of the feeler inclineslaterally and inwardly with respect to the front wall of the shuttle andto the shuttle box frontv` so that the impact of the weft tends to causethe feeler to slip laterally and inwardly away from the head of the weftcarrier and toward the shuttle box mouth,

Vio

as indicatedin Fig; 2. The bend E at the rear of the feeler extendslaterally and outwardly from the rear of the shank toward the head ofthebobbin and in a direction l shuttle box mouth, and, as the result, the

eeler teeth arebrought close to the initial weftiwindings near the headof the bobbin,

I 'claim- An inclined side-slippingl feeler having its shank laterallyand inwardly inclined with respect to the front wall of the shuttle andto the shuttle box front so that the impact of the weft tends to causethe feeler in a direction laterally and outwardly Y clinedwithrespectrto the front wall of the shuttle, and said klieeler having atoothed tip extending laterally and inwardly from the extreme-rear`otsaid outward bend Vtoward the shuttle box mouth, whereby the teethare brought close tothe initial weft windings near the head of thebobbin. Y

In witness whereof, I have hereunto signed my name. Y Y Y v EDWARDS.sTIMPsoN.Vv

